Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            1819      1715      12.9443    14.438867  13.789296  0.294993   13.7156   
2008            1819      1715      12.9875    14.2707    13.754134  0.231178   13.709833 
2009            1819      1715      13.170233  14.131833  13.655347  0.216865   13.5871   
2010            1819      1715      13.7983    14.671933  14.404961  0.176467   14.404933 
2011            1819      1715      13.790867  15.621901  14.861992  0.44205    14.880834 
2012            1819      1715      14.051867  15.293433  14.979614  0.197285   14.986167 
2013            1819      1715      13.2912    14.3014    13.916271  0.206146   13.8886   
2014            1819      1715      13.3786    14.6405    14.25431   0.219941   14.2353   
2015            1819      1715      12.709033  15.238466  14.356626  0.506721   14.3771   
2016            1819      1715      14.024433  15.437366  15.024824  0.273857   15.043767 
2017            1819      1715      13.104233  14.2176    13.806935  0.245092   13.794233 
2018            1819      1715      13.958433  15.770033  15.157889  0.375366   15.138933 
2019            1819      1715      13.408     14.528367  14.034684  0.211821   13.996    
2020            1819      1715      13.4485    14.292067  13.918199  0.199913   13.932333 
2021            1819      1715      14.8787    16.504133  15.856696  0.330925   15.822467 
2022            1819      1715      14.575767  15.725833  15.280255  0.225065   15.241834 
2023            1819      1715      14.420667  15.958433  15.237971  0.331505   15.169333